The article is about Linux not Windows trackpad use. Because three mouse buttons have been pretty standard on Windows mice for a long time there is quite a bit of software that makes use of them on both Linux and Windows, more so than on a Mac where software could only assume one mouse button for a long time. This does make trackpads a bit more of an adjustment on Windows and Linux.

I use a large Wacom tablet in touch mode much of the time. It works pretty well with gestures for left click, right click and left drag but you do end up needing alternatives for right drag and middle click and drag because you run out of fingers. That's an adjustment for software like Unity or Blender that use them in their default control setups in Windows for actions that are not suited to keyboard (like camera control).